A thermal purification process, oven and system applicable to different composite material plates

Abstract

The present invention discloses a thermal purification process, an oven and a system applicable to different composite material plates. In the first aspect, there is a thermal purification process applicable to different composite material plates. In the second aspect, there is a thermal purification oven applicable to different composite material plates, including a box body, which is applied to the above-mentioned thermal purification process for different composite materials. A drying rack for conveying the composite material plates is provided in the box body, and a hot air blower and an ultraviolet lamp are provided in the oven. In the third aspect, there is a thermal purification system applicable to different composite material plates, including the above oven. A conveyor belt is provided at the entrance of the box body, a support frame is provided below the conveyor belt, a feeder is provided on the side of the conveyor belt, a spraying chamber is provided on the side of the feeder, and a controller is electrically connected between the oven and the spraying chamber. The present invention can use appropriate coating amounts, drying temperatures, wind speeds and ultraviolet light intensities according to different types, thicknesses and traveling speeds of the plates, with strong pertinence and good purification effects.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material plates, and particularly relates to a thermal purification process, an oven and a system applicable to different composite material plates. Background Art

[0002] A composite material plate is a plate composed of different materials with different functions in layers. The composite material plate includes a wood-based panel, a veneered wood-based panel, a wood-plastic floor made of wood-plastic materials, and a stone crystal floor made of stone-wood polymer composite materials.

[0003] In the process of producing existing composite material plates, it is usually necessary to coat and dry the composite material plates to remove harmful substances in the composite material plates. Using the same coating amount and drying parameters to coat and dry different types and different thicknesses of composite material plates will result in too much or too little coating amount for some composite material plates, thus causing waste of resources or poor purification effect. Moreover, too high or too low drying temperature, wind speed and ultraviolet light intensity will all affect the production quality of composite material plates.

[0004] Such as Figure 2 shown, in the prior art, usually after the composite material plate 15 passes through the grooving line process, it is conveyed to the feeder 4, and then advances linearly and passes through the spraying chamber 1 and the oven 2 in sequence and then is output. The composite material plate 15 in the oven 2 advances along its own length direction while maintaining the state of being in the same plane. The number of composite material plates 15 that can be dried simultaneously in the oven 2 is small, and the drying efficiency is low. Summary of the Invention

[0005] The purpose of the present invention is to provide a thermal purification process, an oven and a system applicable to different composite material plates, which can use appropriate coating amounts, drying temperatures, wind speeds and ultraviolet light intensities according to different plate types, thicknesses and traveling speeds, with strong pertinence and good purification effect.

[0006] To solve the above technical problems, the present invention adopts the following solutions:

[0007] In a first aspect, a thermal purification process applicable to different composite material plates includes a controller for receiving data of the composite material plate to calculate corresponding data and respectively transmit them to the spraying chamber and the oven, and successively includes the following steps:

[0008] Step S1: Before coating the composite material plate, input data of the plate type, plate thickness t and plate traveling speed of the composite material plate to the controller;

[0009] Step S2: The controller calculates the total coating amount P of the coating agent used by the spraying chamber and the corresponding coating code according to the plate type and plate thickness t data input in Step S1, and transmits the total coating amount P to the spraying chamber to spray the composite material plate;

[0010] Step S3: Convey the composite material plate after spray chamber coating into the oven.

[0011] Step S4: Before drying the composite material plate, the controller obtains the drying temperature, circulating air speed, and ultraviolet light intensity according to the preset numerical range corresponding to the plate traveling speed of the composite material plate input in Step S1 and the coating code calculated in Step S2, and transmits the drying temperature, circulating air speed, and ultraviolet light intensity to the oven to dry the composite material plate. Its function is that through the setting of the controller, it can obtain the total coating amount P of the spraying agent and the drying temperature, circulating air speed, and ultraviolet light intensity during the drying process according to the data of the plate type, plate thickness t, and plate traveling speed of the input composite material plate, with strong pertinence and good purification effects on various different plates.

[0012] Further, in Step S2, the controller calculates the total coating amount P by using the corresponding preset coating coefficient n and coating allowance y according to the input data of the plate type and plate thickness t. Its function is that by presetting the coating coefficient n and coating allowance y in the controller, only the plate type and plate thickness t need to be input during the coating process to calculate the required total coating amount, which is convenient to operate.

[0013] Further, in Step S2, the calculation formula for the total coating amount P is:

[0014] Total coating amount P = coating coefficient n * thickness t + coating allowance y.

[0015] Further, in Step S3, after the composite material plate is output from the spray chamber, the composite material plate passes through a feeder with a conveying direction perpendicular to the output direction of the spray chamber, and is conveyed to a conveyor belt with a conveying direction opposite to the output direction of the spray chamber. The conveyor belt extends from outside the oven to inside the oven. Both the feeder and the conveyor belt are existing technologies for commonly conveying plates. Its function is that through the setting of the conveying directions of each device, each device is distributed in a U shape along the traveling path of the composite material plate, which can effectively reduce the occupied space length compared with the linear distribution in the prior art.

[0016] Further, in Step S3, the feeder is provided with a first baffle perpendicular to the output direction of the spray chamber, and a support frame is provided below the section of the conveyor belt outside the oven. The support frame is provided with a second baffle perpendicular to the conveying direction of the feeder. Its function is that through the setting of the first baffle and the second baffle, it can prevent the composite material plate from falling off the feeder or the conveyor belt during the process of changing the advancing direction.

[0017] Further, in the step S4, two ranges of the traveling speed of the plate are preset in the controller. After the input traveling speed of the plate is substituted into the corresponding traveling speed range of the plate and then into the coating code, the corresponding drying temperature, circulating air speed, and ultraviolet light intensity can be obtained. Its function is that through the setting of the two preset traveling speeds of the plate, different drying temperatures, circulating air speeds, and ultraviolet light intensities can be adopted according to the different traveling speeds of the composite material plate, and the drying effect is good.

[0018] In a second aspect, a thermal purification oven applicable to different composite material plates includes a box body, which is applied to the above-mentioned thermal purification process applicable to different composite materials. A drying rack for conveying the composite material plate is provided in the box body, and a hot air blower and an ultraviolet lamp are provided in the oven. The drying rack is a prior art. Its function is that through the setting of the drying rack, most of the drying racks in the oven are vertically arranged with the ground, and most of the drying racks in the middle section in the traveling direction of the drying rack move forward along the thickness direction, so that more composite material plates can be dried simultaneously, and the drying effect is good.

[0019] Further, an air curtain machine with an outlet facing the drying rack is provided on the top surface inside the box body, and the air curtain machine is connected to the outlet of the hot air blower. Its function is that through the setting of the air curtain machine, hot air can be conveyed to the surface of each composite material plate passing through the outlet of the air curtain machine.

[0020] Further, the distance between the composite material plates vertically arranged with the ground on the drying rack is greater than 30 mm. Its function is that the hot air blown out from the air curtain machine can freely circulate on the surface of the composite material plate.

[0021] Further, at least three temperature sensors are evenly provided in the box body along the direction of conveying the composite material plate by the drying rack, and at least three wind speed sensors are evenly provided in the box body along the direction of conveying the composite material plate by the drying rack. Its function is that through the setting of the temperature sensors and the wind speed sensors, the average value of the detection is used to detect the temperature and wind speed in the oven, which is convenient for the controller to control the hot air blower to adjust the temperature and wind speed in the oven according to the detected temperature and wind speed to make them conform to the data obtained by the controller.

[0022] Third aspect, a thermal purification system applicable to different composite material plates, includes a thermal purification oven applicable to different composite materials as described above. A conveyor belt for conveying the composite material plates from outside the oven to inside the oven is provided at the entrance of the box body. A support frame is provided below the conveyor belt. A feeder with a conveying direction perpendicular to the conveying direction of the conveyor belt is provided on the side of the conveyor belt. A spraying chamber with a conveying direction opposite to the conveying direction of the conveyor belt is provided on the side of the feeder. A controller is electrically connected between the oven and the spraying chamber. Its function is that through the oven with a drying rack and the setting of the conveying directions between various devices, the composite material plates enter the drying rack in the oven along the width direction while keeping themselves non-rotating, and then the drying rack rotates the composite material plates from a state parallel to the ground to a state perpendicular to the ground.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. Through the setting of the controller, it is possible to obtain the total coating amount P of the spraying agent, the drying temperature, the circulating wind speed, and the ultraviolet light intensity during the drying process according to the data of the type of the composite material plate, the plate thickness t, and the plate traveling speed input, with strong pertinence and good purification effects on various different plates;

[0025] 2. Through the setting of the drying rack, most of the drying racks in the oven are arranged perpendicular to the ground, and most of the drying racks in the middle section in the traveling direction of the drying rack move forward along the thickness direction, enabling the simultaneous drying of a relatively large number of composite material plates with good drying effects;

[0026] 3. Through the oven with a drying rack and the setting of the conveying directions between various devices, the composite material plates enter the drying rack in the oven along the width direction while keeping themselves non-rotating, and then the drying rack rotates the composite material plates from a state parallel to the ground to a state perpendicular to the ground. Description of the Drawings

[0027] Figure 1 is a process flow schematic diagram of the present invention;

[0028] Figure 2 is a top view structural schematic diagram of the purification system in the prior art;

[0029] Figure 3 is a top view structural schematic diagram of the thermal purification system in the present invention;

[0030] Figure 4 is a structural schematic diagram of the oven in the present invention.

[0031] The descriptions of the reference numerals are as follows: 1. Spray bin; 2. Oven; 3. Controller; 4. Feeder; 5. Conveyor belt; 6. First baffle; 7. Support frame; 8. Second baffle; 9. Drying plate rack; 10. Hot air blower; 11. Ultraviolet lamp; 12. Air curtain machine; 13. Temperature sensor; 14. Wind speed sensor; 15. Composite material board; 16. Box body. Detailed implementation manners

[0032] The present invention will be further described in detail below in conjunction with the embodiments and the drawings, but the implementation manners of the present invention are not limited thereto.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "provided with", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] Embodiment 1

[0036] In a first aspect, a thermal purification process applicable to different composite material boards 15 includes a controller 3 that receives data of the composite material board 15 to calculate corresponding data and respectively transmits them to the spray bin 1 and the oven 2. As Figure 1 shown, it sequentially includes the following steps:

[0037] Step S1: Before coating the composite material board 15, input data of the board type, board thickness t, and board traveling speed of the composite material board 15 into the controller 3;

[0038] Step S2: The controller 3 calculates the total coating amount P of the coating agent used by the spray bin 1 and the corresponding coating code according to the board type and board thickness t data input in step S1, and transmits the total coating amount P to the spray bin 1 to spray the composite material board 15;

[0039] Step S3: Transport the composite material board 15 coated by the spraying bin 1 into the oven 2;

[0040] Step S4: Before drying the composite material board 15, the controller 3, according to the sheet traveling speed of the composite material board 15 input in Step S1 and the coating code calculated in Step S2, obtains the drying temperature, circulating wind speed, and ultraviolet light intensity according to the corresponding preset value ranges, and transmits the drying temperature, circulating wind speed, and ultraviolet light intensity to the oven 2 to dry the composite material board 15. The agent used for coating is nano-oxidized formaldehyde-removing liquid, which has the functions of photocatalyst formaldehyde-removing, TVOC-removing, and odor-removing. Its function is that through the setting of the controller 3, it can obtain the total coating amount P of the sprayed agent and the drying temperature, circulating wind speed, and ultraviolet light intensity during the drying process according to the data of the sheet type, sheet thickness t, and sheet traveling speed of the composite material board 15 input, with strong pertinence and good purification effects on various different sheets.

[0041] Specifically, as Figure 1 shown, in the said Step S2, the controller 3 calculates the total coating amount P by using the corresponding preset coating coefficient n and coating allowance y according to the input data of the sheet type and sheet thickness t. Among them, the coating coefficient of the artificial board is 1, the coating coefficient of the veneered artificial board is 0.5, and the coating coefficient of the wood-plastic material / stone-wood polymer composite board 15 is 0.4. Its function is that by presetting the coating coefficient n and coating allowance y in the controller 3, only the sheet type and sheet thickness t need to be input during the coating process to calculate the required total coating amount, which is convenient to operate.

[0042] In the said Step S2, the calculation formula of the total coating amount P is:

[0043] Total coating amount P = coating coefficient n * thickness t + coating allowance y.

[0044] The relationship between the total coating amounts p and coating codes of different materials and different thicknesses is shown in the following table:

[0045] Total coating amounts and coating codes of different materials and different thicknesses (summary table)

[0046]

[0047] Specifically, as Figure 3As shown, in step S3, after the composite material plate 15 is output from the spraying bin 1, the composite material plate 15 passes through a feeder 4 whose conveying direction is perpendicular to the output direction of the spraying bin 1, and the composite material plate 15 is conveyed onto a conveyor belt 5 whose conveying direction is opposite to the output direction of the spraying bin 1. The conveyor belt 5 extends from outside the drying oven 2 into the drying oven 2. Both the feeder 4 and the conveyor belt 5 are prior arts for commonly conveying plates. Its function is that through the setting of the conveying directions of each device, each device is distributed in a U shape along the traveling path of the composite material plate 15, and compared with the linear distribution in the prior art, it can effectively reduce the occupied space length.

[0048] Specifically, as Figure 3 shown, in step S3, the feeder 4 is provided with a first baffle 6 perpendicular to the output direction of the spraying bin 1, and a support frame 7 is provided below the section of the conveyor belt 5 outside the drying oven 2. The support frame 7 is provided with a second baffle 8 perpendicular to the conveying direction of the feeder 4. Its function is that through the setting of the first baffle 6 and the second baffle 8, it can prevent the composite material plate 15 from falling off the feeder 4 or the conveyor belt 5 during the process of changing the advancing direction.

[0049] Specifically, in step S4, two ranges of the traveling speed of the plate are preset in the controller 3. After the controller 3 first substitutes the input traveling speed of the plate into the corresponding range of the traveling speed of the plate, and then substitutes the coating code, the corresponding drying temperature, circulating air speed, and ultraviolet light intensity can be obtained. Its function is that through the setting of the two preset traveling speeds of the plate, different drying temperatures, circulating air speeds, and ultraviolet light intensities can be adopted according to the different traveling speeds of the composite material plate 15, and the drying effect is good.

[0050] The ranges of the traveling speed of the plate include a normal speed and a fast speed. Among them, the normal speed / P: P speed = 3 - 5 m / min, and the fast speed / K: K speed = 5.1 - 8 m / min.

[0051] The relationships among the coating code, drying temperature, circulating air speed, and ultraviolet light intensity when the input traveling speed of the plate is within the range of the normal speed are shown in the following table:

[0052] Temperature, fan, ultraviolet light intensity in the purification tunnel at P speed (summary table)

[0053]

[0054] The relationships among the coating code, drying temperature, circulating air speed, and ultraviolet light intensity when the input traveling speed of the plate is within the range of the fast speed are shown in the following table:

[0055] Temperature, fan, ultraviolet light intensity in the purification tunnel at K speed (summary table)

[0056]

[0057] In a second aspect, a thermal purification oven applicable to different composite material plates, such as Figure 4 shown, includes a box body 16, which is applied to the above-mentioned thermal purification process applicable to different composite materials. A drying rack 9 for conveying the composite material plate 15 is provided in the box body 16, and a hot air blower 10 and an ultraviolet lamp 11 are provided in the box body 16. The drying rack 9 is a prior art and adopts the drying rack in the publication number CN216637779U. The height of the inlet and outlet of the box body 16 is 3 cm. Its function is that through the setting of the drying rack 9, most of the drying racks 9 in the oven 2 are vertically arranged with the ground, and most of the drying racks 9 in the middle section in the advancing direction of the drying rack 9 advance along the thickness direction, so that more composite material plates 15 can be dried simultaneously, and the drying effect is good.

[0058] Specifically, as Figure 4 shown, an air curtain machine 12 with an outlet facing the drying rack 9 is provided on the inner top surface of the box body 16, and the air curtain machine 12 is connected to the outlet of the hot air blower 10. Its function is that through the setting of the air curtain machine 12, hot air can be conveyed to the surface of each composite material plate 15 passing through the outlet of the air curtain machine 12.

[0059] Specifically, the distance between the composite material plates 15 vertically arranged with the ground on the drying rack 9 is greater than 30 mm. Its function is to enable the hot air blown out from the air curtain machine 12 to freely circulate on the surface of the composite material plate 15.

[0060] Specifically, as Figure 4 shown, three temperature sensors 13 are evenly arranged in the box body 16 along the direction of conveying the composite material plate 15 by the drying rack 9, and three wind speed sensors 14 are evenly arranged in the box body 16 along the direction of conveying the composite material plate 15 by the drying rack 9. The temperature sensors 13 and the wind speed sensors 14 are both prior arts. Its function is that through the setting of the temperature sensors 13 and the wind speed sensors 14, the average value detected is used to detect the temperature and wind speed in the oven 2, so that the controller 3 can control the hot air blower 10 to adjust the temperature and wind speed in the oven 2 according to the detected temperature and wind speed to make it conform to the data obtained by the controller 3.

[0061] In a third aspect, a thermal purification system applicable to different composite material plates 15 includes the above-mentioned thermal purification oven 2 applicable to different composite materials. A conveyor belt 5 for conveying the composite material plate 15 from outside the oven 2 into the oven 2 is provided at the entrance of the box body 16. A support frame 7 is provided below the conveyor belt 5. A feeder 4 with a conveying direction perpendicular to the conveying direction of the conveyor belt 5 is provided on the side of the conveyor belt. A spraying chamber 1 with a conveying direction opposite to the conveying direction of the conveyor belt 5 is provided on the side of the feeder 4. A controller 3 is electrically connected between the oven 2 and the spraying chamber 1. Its function is that through the oven 2 provided with a drying rack 9 and the setting of the conveying directions between various devices, the composite material plate 15 enters the drying rack 9 in the oven 2 along the width direction while keeping itself non-rotating, and then the drying rack 9 rotates the composite material plate 15 from a state parallel to the ground to a state perpendicular to the ground.

[0062] The working principle of this embodiment is described as follows: First, the plate type, plate thickness, and plate traveling speed of the composite material plate 15 are input into the controller 3. The controller 3 calculates the total coating amount P and conveys it to the spraying chamber 1. The controller 3 substitutes data into a table to obtain the drying temperature, circulating air speed, and ultraviolet intensity and conveys them to the oven 2. Then, the composite material plate 15 that has undergone the slotted opening process is conveyed into the spraying chamber 1 along the width direction. The spraying chamber 1 coats the composite material plate 15 with a chemical agent according to the total coating amount P conveyed by the controller 3. Then, the composite material plate 15 is conveyed by the spraying chamber 1 onto the feeder 4. The feeder 4 conveys the composite material plate 15 along the length direction onto the conveyor belt 5. The conveyor belt 5 conveys the composite material plate 15 along the width direction onto the drying rack 9. The drying rack 9 rotates the composite material plate 15 to be perpendicular to the ground and then conveys it along the width direction and dries the composite material plate 15 according to the drying temperature, circulating air speed, and ultraviolet intensity conveyed by the controller 3.

[0063] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Based on the technical essence of the present invention, any simple modifications, equivalent replacements, and improvements made to the above embodiments within the spirit and principles of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A thermal purification process applicable to different composite material plates, characterized in that: It further includes a controller (3) for receiving data of the composite material plate (15), calculating corresponding data, and respectively transmitting the data to the spraying bin (1) and the oven (2), which successively includes the following steps: Step S1: Before coating the composite material plate (15), input data of the plate type, plate thickness t, and plate traveling speed of the composite material plate (15) into the controller (3); Step S2: The controller (3) calculates the total coating amount P of the coating agent used by the spraying bin (1) and the corresponding coating code according to the data of the plate type and plate thickness t input in Step S1, and transmits the total coating amount P to the spraying bin (1) to spray the composite material plate (15); Step S3: Convey the composite material plate (15) coated by the spraying bin (1) into the oven (2); Step S4: Before drying the composite material plate (15), the controller (3) obtains the drying temperature, circulating air speed, and ultraviolet light intensity according to the preset value range corresponding to the plate traveling speed of the composite material plate (15) input in Step S1 and the coating code calculated in Step S2, and transmits the drying temperature, circulating air speed, and ultraviolet light intensity to the oven (2) to dry the composite material plate (15); In the said Step S2, the controller (3) calculates the total coating amount P by using the corresponding preset coating coefficient n and coating allowance y according to the input data of the plate type and plate thickness t; 2. The thermal purification process applicable to different composite material plates according to claim 1, characterized in that: In the said Step S2, the calculation formula of the total coating amount P is: Total coating amount P = coating coefficient n * thickness t + coating allowance y; 3. A thermal purification process applicable to different composite material plates according to claim 1, characterized in that: In the said Step S3, after the composite material plate (15) is output from the spraying bin (1), the composite material plate (15) passes through a feeder (4) whose conveying direction is perpendicular to the output direction of the spraying bin (1), and the composite material plate (15) is conveyed onto a conveyor belt (5) whose conveying direction is opposite to the output direction of the spraying bin (1), and the conveyor belt (5) extends from outside the oven (2) into the oven (2); 4. A thermal purification process applicable to different composite material plates according to claim 3, characterized in that: In the said Step S3, the feeder (4) is provided with a first baffle (6) perpendicular to the output direction of the spraying bin (1), and a support frame (7) is provided below the section of the conveyor belt (5) located outside the oven (2), and the support frame (7) is provided with a second baffle (8) perpendicular to the conveying direction of the feeder (4); 5. A thermal purification process applicable to different composite material plates according to claim 1, characterized in that: In the said Step S4, two plate traveling speed ranges are preset in the controller (3). The controller (3) first substitutes the input plate traveling speed into the corresponding plate traveling speed range, and then substitutes the coating code to obtain the corresponding drying temperature, circulating air speed, and ultraviolet light intensity; 6. A thermal purification oven applicable to different composite material plates, comprising a box body (16), characterized in that: Applied to a thermal purification process for different composite materials according to any one of claims 1 - 5, a drying rack (9) for conveying the composite material plate (15) is provided in the box body (16), and a hot air blower (10) and an ultraviolet lamp (11) are provided in the box body (16); 7. The thermal purification oven applicable to different composite material plates according to claim 6, characterized in that: An air curtain machine (12) with an outlet facing the drying rack (9) is provided on the top surface inside the box body (16), and the air curtain machine (12) is communicated with the outlet of the hot air blower (10).

8. A thermal purification oven applicable to different composite material plates according to claim 6, characterized in that: At least three temperature sensors (13) are evenly arranged in the box body (16) along the direction of conveying the composite material plate (15) on the drying plate rack (9), and at least three wind speed sensors (14) are evenly arranged in the box body (16) along the direction of conveying the composite material plate (15) on the drying plate rack (9).

9. A thermal purification system applicable to different composite material plates, characterized in that: Comprising a thermal purification oven (2) applicable to different composite materials according to claim 6, a conveyor belt (5) for conveying the composite material plate (15) from outside the oven (2) into the oven (2) is arranged at the entrance of the box body (16), a support frame (7) is arranged below the conveyor belt (5), a feeder (4) with a conveying direction perpendicular to the conveying direction of the conveyor belt (5) is arranged on the side surface of the conveyor belt (5), a spraying chamber (1) with a conveying direction opposite to the conveying direction of the conveyor belt (5) is arranged on the side surface of the feeder (4), and a controller (3) is electrically connected between the oven (2) and the spraying chamber (1).

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